See Studies on Map

On the map below, click on a region to show a more detailed map (when available) or see a list of studies with locations in that region (when a detailed map is not available).

Region Name Number of Studies World 494,110 North America 192,197 United States 172,471 Alabama 11,613 Alaska 895 Arizona 14,558 Arkansas 6,303 California 45,289 Colorado 14,683 Connecticut 10,305 Delaware 2,339 District of Columbia 6,778 Florida 30,525 Georgia 17,081 Hawaii 2,269 Idaho 3,456 Illinois 21,974 Indiana 11,959 Iowa 6,350 Kansas 8,621 Kentucky 9,112 Louisiana 9,001 Maine 2,216 Maryland 21,901 Massachusetts 24,246 Michigan 17,677 Minnesota 15,459 Mississippi 3,825 Missouri 16,851 Montana 2,621 Nebraska 7,064 Nevada 5,767 New Hampshire 3,063 New Jersey 13,939 New Mexico 4,125 New York 35,624 North Carolina 23,431 North Dakota 2,333 Ohio 25,434 Oklahoma 7,857 Oregon 10,365 Pennsylvania 27,470 Rhode Island 4,609 South Carolina 11,386 South Dakota 2,614 Tennessee 16,745 Texas 36,713 Utah 9,535 Vermont 2,256 Virginia 14,132 Washington 15,285 West Virginia 2,641 Wisconsin 9,827 Wyoming 552

Tips: Click on a region name link to show a map of that region Click on a study count link to see a list of studies in that region. Use your browser's back button to return to this list and view studies in another region. Studies with no locations are not included in the study counts or on the maps. Studies with multiple locations are included in each region where the study has locations.